diff --git a/fine-hibernate/src/main/java/com/fr/third/org/hibernate/tool/schema/internal/AbstractSchemaMigrator.java b/fine-hibernate/src/main/java/com/fr/third/org/hibernate/tool/schema/internal/AbstractSchemaMigrator.java
index d3e452571..bbe67279e 100644
--- a/fine-hibernate/src/main/java/com/fr/third/org/hibernate/tool/schema/internal/AbstractSchemaMigrator.java
+++ b/fine-hibernate/src/main/java/com/fr/third/org/hibernate/tool/schema/internal/AbstractSchemaMigrator.java
@@ -362,7 +362,9 @@ public abstract class AbstractSchemaMigrator implements SchemaMigrator {
 			Set<Identifier> identifiers = getUniqueKeyIdentifiers(table);
 			if (tableInfo != null) {
 				for (IndexInformation indexInfo : tableInfo.getIndexes()) {
-					if (!indexInfo.isUnique() || indexInfo.getIndexIdentifier().equals(tableInfo.getPrimaryKey().getPrimaryKeyIdentifier())) {
+					PrimaryKeyInformation primaryKey = tableInfo.getPrimaryKey();
+					//主键不存在时npe处理
+					if (!indexInfo.isUnique() || (primaryKey != null && indexInfo.getIndexIdentifier().equals(primaryKey.getPrimaryKeyIdentifier()))) {
 						continue;
 					}
 					//如果旧的唯一键已经不存在, 则删除